const http = require('http')

const server = http.createServer()

server.on('request', (req, res) => {
  let content = '<h1>404 Not Found</h1>'
  const url = req.url
  if(url === '/' || url === '/index.html') {
    content = '<h1>欢迎来到首页</h1>'
  }
  if(url === '/about.html') {
    content = '<h1>欢迎来到关于页面</h1>'
  }
  res.setHeader('Content-Type', 'text/html; charset=utf-8')
  res.end(content)
})

server.listen(80, () => {
  console.log('server running at http://127.0.0.1')
})